'83 John Deere 950 with 700 hours. We've always used Deere brand 30. I've started OCD'ing about this, and was wondering about going synthetic. Chevron recommends Delo 400 Multigrade for pre-2007 engines. I wonder if this is even a concern with a machine doing so little hours, yet getting an annual change.
What say ye
a couple years ago i went thru a 63 ford 4000 gasser and did some top end work ont he head, valves.. etc..
when i put her back together i used walmart supertech 10w30 full syn oil.
as syn goes.. it's on the cheaper side.. but I put less than 100 hours on her.
doing good.
i did this partially to combat sticking intake valves due to this junk the govt is passing off on us calling it gas. nt good in a moist state... goes stale in a couple weeks! makes varnish... valves stick on intakes...
grrr...
just worked on a 55 a50 ford today.. same issue. only 1 intake stuck on this one.. not all 4.
did the same.. only this time had ? kendal 10w30 full syn on hand cuz it had been on sale at the auto store. again.. cheap oil.. but low hours and good cleaner.
the 4000 so far has been loving the new oil.
no issues.
i did a filter change after 25 hours and topped off a quart and cut filter open to see if any of the myths about all the varnish breaking loose .. was even close to happening.
nope. looked like average oil filter.
think about this.
sludge took x or xx years to accumulate. even a high detergent oil ain't making it all wash down immediately.